/Engine/Source/Runtime/Engine/Classes/Engine/Engine.h
Gets all local players associated with the engine. This function should only be used in rare cases where no UWorld* is available to get a player list associated with the world. E.g, - use GetFirstLocalPlayerController(UWorld *InWorld) when possible!
void GetAllLocalPlayerControllers ( [TArray](API\Runtime\Core\Containers\TArray)< [APlayerController](API\Runtime\Engine\GameFramework\APlayerController) * > & PlayerList )